Alaska earthquakes

M3.6 earthquake 121 km SE of Adak, Alaska

A magnitude 3.6 earthquake struck 121 km SE of Adak, Alaska on Fri, Jun 30, 2023, 7:07 PM HADT (04:07 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.8 24 km SE of Adak, Alaska. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.6 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-07-01 04:07:28 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
51.273° N, 175.162° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
3.6ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.091 · 16 stations
3.2ML, local (Richter)Alaska Earthquake CenterPreliminary

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 6.5 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.09
Depth from
Operator assigned
Station coverage gap
311°, poorly surrounded by stations
Stations used
19

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 93 in the 30 days before it.

After

  1. 2.7113 km SSW of Atka, Alaska · 1188 days ago · 13 km deep · 14 km away
  2. 1.977 km SE of Adak, Alaska · 1188 days ago · 13 km deep · 45 km away
  3. 1.643 km SSE of Adak, Alaska · 1188 days ago · 27 km deep · 88 km away
  4. 2.9Andreanof Islands, Aleutian Islands, Alaska · 1187 days ago · 35 km deep · 68 km away
  5. 1.856 km SSE of Adak, Alaska · 1187 days ago · 24 km deep · 82 km away
  6. 1.561 km S of Adak, Alaska · 1187 days ago · 13 km deep · 94 km away
  7. 3.2Andreanof Islands, Aleutian Islands, Alaska · 1187 days ago · 79 km deep · 68 km away
  8. 2.252 km ENE of Adak, Alaska · 1186 days ago · 161 km deep · 97 km away
  9. 2.090 km SW of Atka, Alaska · 1186 days ago · 13 km deep · 38 km away
  10. 2.6100 km SSE of Adak, Alaska · 1186 days ago · 10 km deep · 71 km away
  11. 1.736 km SSE of Adak, Alaska · 1185 days ago · 57 km deep · 96 km away
  12. 2.036 km ESE of Adak, Alaska · 1185 days ago · 75 km deep · 89 km away
  13. 3.535 km E of Adak, Alaska · 1184 days ago · 72 km deep · 92 km away
  14. 1.949 km S of Adak, Alaska · 1183 days ago · 24 km deep · 98 km away
  15. 2.0127 km SE of Adak, Alaska · 1183 days ago · 5 km deep · 15 km away
  16. 1.658 km SE of Adak, Alaska · 1183 days ago · 24 km deep · 71 km away
  17. 1.658 km SE of Adak, Alaska · 1183 days ago · 23 km deep · 66 km away
  18. 1.765 km SSE of Adak, Alaska · 1182 days ago · 5 km deep · 85 km away
  19. 2.188 km SW of Atka, Alaska · 1182 days ago · 26 km deep · 36 km away
  20. 2.763 km SSE of Adak, Alaska · 1182 days ago · 35 km deep · 80 km away
  21. 1.961 km SE of Adak, Alaska · 1182 days ago · 24 km deep · 65 km away
  22. 1.959 km SE of Adak, Alaska · 1182 days ago · 22 km deep · 70 km away
  23. 1.6Andreanof Islands, Aleutian Islands, Alaska · 1181 days ago · 24 km deep · 98 km away
  24. 1.784 km WSW of Atka, Alaska · 1181 days ago · 60 km deep · 63 km away
  25. 2.222 km SE of Adak, Alaska · 1181 days ago · 94 km deep · 100 km away
  26. 3.824 km SE of Adak, Alaska · 1181 days ago · 55 km deep · 99 km away
  27. 1.858 km SE of Adak, Alaska · 1180 days ago · 42 km deep · 71 km away
  28. 1.759 km SSE of Adak, Alaska · 1180 days ago · 23 km deep · 74 km away
  29. 2.031 km SW of Atka, Alaska · 1180 days ago · 70 km deep · 91 km away
  30. 1.567 km SSE of Adak, Alaska · 1180 days ago · 22 km deep · 86 km away
  31. 2.6Andreanof Islands, Aleutian Islands, Alaska · 1180 days ago · 33 km deep · 95 km away
  32. 1.955 km ESE of Adak, Alaska · 1180 days ago · 61 km deep · 71 km away
  33. 2.051 km S of Adak, Alaska · 1179 days ago · 26 km deep · 97 km away
  34. 1.983 km ENE of Adak, Alaska · 1179 days ago · 116 km deep · 99 km away
  35. 2.1123 km SSW of Atka, Alaska · 1179 days ago · 14 km deep · 5 km away
  36. 2.9100 km ESE of Adak, Alaska · 1179 days ago · 35 km deep · 32 km away
  37. 2.2142 km S of Atka, Alaska · 1179 days ago · 7 km deep · 94 km away
  38. 1.770 km SSE of Adak, Alaska · 1179 days ago · 26 km deep · 85 km away
  39. 2.071 km SSE of Adak, Alaska · 1178 days ago · 20 km deep · 79 km away
  40. 1.673 km SSE of Adak, Alaska · 1178 days ago · 20 km deep · 71 km away
  41. 1.6Andreanof Islands, Aleutian Islands, Alaska · 1178 days ago · 21 km deep · 76 km away
  42. 1.573 km SSE of Adak, Alaska · 1178 days ago · 18 km deep · 79 km away
  43. 1.966 km SSE of Atka, Alaska · 1178 days ago · 15 km deep · 98 km away
  44. 3.164 km SE of Adak, Alaska · 1177 days ago · 36 km deep · 61 km away
  45. 3.598 km ESE of Adak, Alaska · 1177 days ago · 42 km deep · 25 km away
  46. 2.294 km SE of Adak, Alaska · 1177 days ago · 15 km deep · 28 km away
  47. 2.1Andreanof Islands, Aleutian Islands, Alaska · 1177 days ago · 21 km deep · 29 km away
  48. 1.9100 km ESE of Adak, Alaska · 1177 days ago · 25 km deep · 22 km away
  49. 3.270 km SE of Adak, Alaska · 1177 days ago · 35 km deep · 51 km away
  50. 2.1155 km SE of Adak, Alaska · 1176 days ago · 5 km deep · 53 km away
  51. 2.184 km W of Atka, Alaska · 1175 days ago · 94 km deep · 94 km away
  52. 1.956 km SSE of Adak, Alaska · 1175 days ago · 13 km deep · 84 km away
  53. 2.680 km ESE of Adak, Alaska · 1175 days ago · 35 km deep · 42 km away
  54. 2.063 km ESE of Adak, Alaska · 1175 days ago · 26 km deep · 58 km away
  55. 1.761 km SSE of Adak, Alaska · 1174 days ago · 23 km deep · 72 km away
  56. 1.6Andreanof Islands, Aleutian Islands, Alaska · 1173 days ago · 11 km deep · 59 km away
  57. 1.663 km SW of Atka, Alaska · 1173 days ago · 39 km deep · 61 km away
  58. 1.585 km SW of Atka, Alaska · 1173 days ago · 47 km deep · 55 km away
  59. 1.883 km SSE of Atka, Alaska · 1173 days ago · 0 km deep · 90 km away
  60. 2.666 km SE of Adak, Alaska · 1172 days ago · 35 km deep · 55 km away

The first 60 of at least 199.

Before

  1. 2.5109 km SSW of Atka, Alaska · 1190 days ago · 10 km deep · 16 km away
  2. 1.559 km SSE of Adak, Alaska · 1190 days ago · 13 km deep · 72 km away
  3. 1.533 km SSE of Adak, Alaska · 1190 days ago · 47 km deep · 93 km away
  4. 1.858 km SSW of Atka, Alaska · 1190 days ago · 26 km deep · 64 km away
  5. 2.0Andreanof Islands, Aleutian Islands, Alaska · 1191 days ago · 22 km deep · 94 km away
  6. 3.242 km SSE of Adak, Alaska · 1191 days ago · 33 km deep · 88 km away
  7. 1.635 km SSE of Adak, Alaska · 1192 days ago · 39 km deep · 92 km away
  8. 2.279 km SE of Adak, Alaska · 1192 days ago · 13 km deep · 43 km away
  9. 2.6Andreanof Islands, Aleutian Islands, Alaska · 1193 days ago · 35 km deep · 85 km away
  10. 2.7128 km SSW of Atka, Alaska · 1193 days ago · 10 km deep · 18 km away
  11. 1.760 km SE of Adak, Alaska · 1194 days ago · 24 km deep · 69 km away
  12. 2.5124 km SSW of Atka, Alaska · 1194 days ago · 10 km deep · 16 km away
  13. 1.675 km SW of Atka, Alaska · 1194 days ago · 31 km deep · 52 km away
  14. 1.662 km SSW of Atka, Alaska · 1194 days ago · 21 km deep · 60 km away
  15. 3.663 km SE of Adak, Alaska · 1194 days ago · 35 km deep · 66 km away
  16. 2.042 km SSE of Adak, Alaska · 1195 days ago · 35 km deep · 88 km away
  17. 3.557 km ESE of Adak, Alaska · 1196 days ago · 61 km deep · 65 km away
  18. 1.9117 km SSW of Atka, Alaska · 1196 days ago · 5 km deep · 12 km away
  19. 1.624 km SE of Adak, Alaska · 1196 days ago · 69 km deep · 98 km away
  20. 3.267 km SSE of Atka, Alaska · 1196 days ago · 35 km deep · 94 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000kpd2 (also filed as ak0238d28h47). Read Thu, Oct 1, 2026, 4:52 PM UTC.